1//
2// local/detail/impl/endpoint.hpp
3// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4//
5// Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
6// Derived from a public domain implementation written by Daniel Casimiro.
7//
8// Distributed under the Boost Software License, Version 1.0. (See accompanying
9// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
10//
11
12#ifndef BOOST_ASIO_LOCAL_DETAIL_IMPL_ENDPOINT_IPP
13#define BOOST_ASIO_LOCAL_DETAIL_IMPL_ENDPOINT_IPP
14
15#if defined(_MSC_VER) && (_MSC_VER >= 1200)
16# pragma once
17#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
18
19#include <boost/asio/detail/config.hpp>
20
21#if defined(BOOST_ASIO_HAS_LOCAL_SOCKETS)
22
23#include <cstring>
24#include <boost/asio/detail/socket_ops.hpp>
25#include <boost/asio/detail/throw_error.hpp>
26#include <boost/asio/error.hpp>
27#include <boost/asio/local/detail/endpoint.hpp>
28
29#include <boost/asio/detail/push_options.hpp>
30
31namespace boost {
32namespace asio {
33namespace local {
34namespace detail {
35
36endpoint::endpoint()
37{
38 init(path: "", path_length: 0);
39}
40
41endpoint::endpoint(const char* path_name)
42{
43 using namespace std; // For strlen.
44 init(path: path_name, path_length: strlen(s: path_name));
45}
46
47endpoint::endpoint(const std::string& path_name)
48{
49 init(path: path_name.data(), path_length: path_name.length());
50}
51
52void endpoint::resize(std::size_t new_size)
53{
54 if (new_size > sizeof(boost::asio::detail::sockaddr_un_type))
55 {
56 boost::system::error_code ec(boost::asio::error::invalid_argument);
57 boost::asio::detail::throw_error(err: ec);
58 }
59 else if (new_size == 0)
60 {
61 path_length_ = 0;
62 }
63 else
64 {
65 path_length_ = new_size
66 - offsetof(boost::asio::detail::sockaddr_un_type, sun_path);
67
68 // The path returned by the operating system may be NUL-terminated.
69 if (path_length_ > 0 && data_.local.sun_path[path_length_ - 1] == 0)
70 --path_length_;
71 }
72}
73
74std::string endpoint::path() const
75{
76 return std::string(data_.local.sun_path, path_length_);
77}
78
79void endpoint::path(const char* p)
80{
81 using namespace std; // For strlen.
82 init(path: p, path_length: strlen(s: p));
83}
84
85void endpoint::path(const std::string& p)
86{
87 init(path: p.data(), path_length: p.length());
88}
89
90bool operator==(const endpoint& e1, const endpoint& e2)
91{
92 return e1.path() == e2.path();
93}
94
95bool operator<(const endpoint& e1, const endpoint& e2)
96{
97 return e1.path() < e2.path();
98}
99
100void endpoint::init(const char* path_name, std::size_t path_length)
101{
102 if (path_length > sizeof(data_.local.sun_path) - 1)
103 {
104 // The buffer is not large enough to store this address.
105 boost::system::error_code ec(boost::asio::error::name_too_long);
106 boost::asio::detail::throw_error(err: ec);
107 }
108
109 using namespace std; // For memcpy.
110 data_.local = boost::asio::detail::sockaddr_un_type();
111 data_.local.sun_family = AF_UNIX;
112 memcpy(dest: data_.local.sun_path, src: path_name, n: path_length);
113 path_length_ = path_length;
114
115 // NUL-terminate normal path names. Names that start with a NUL are in the
116 // UNIX domain protocol's "abstract namespace" and are not NUL-terminated.
117 if (path_length > 0 && data_.local.sun_path[0] == 0)
118 data_.local.sun_path[path_length] = 0;
119}
120
121} // namespace detail
122} // namespace local
123} // namespace asio
124} // namespace boost
125
126#include <boost/asio/detail/pop_options.hpp>
127
128#endif // defined(BOOST_ASIO_HAS_LOCAL_SOCKETS)
129
130#endif // BOOST_ASIO_LOCAL_DETAIL_IMPL_ENDPOINT_IPP
131

source code of boost/boost/asio/local/detail/impl/endpoint.ipp